// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_
#define UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_

#include "ui/views/view.h"

namespace views {

// An interface used to expose lists of items for selection by text input.
class VIEWS_EXPORT PrefixDelegate : public View {
public:
    // Returns the total number of selectable items.
    virtual int GetRowCount() = 0;

    // Returns the row of the currently selected item, or -1 if no item is
    // selected.
    virtual int GetSelectedRow() = 0;

    // Sets the selection to the specified row.
    virtual void SetSelectedRow(int row) = 0;

    // Returns the item at the specified row.
    virtual base::string16 GetTextForRow(int row) = 0;

protected:
    ~PrefixDelegate() override { }
};

} // namespace views

#endif // UI_VIEWS_CONTROLS_PREFIX_DELEGATE_H_
